From 6903074c367cfb13166c2974d6a886fdc7a00d21 Mon Sep 17 00:00:00 2001 From: Xiao Guangrong Date: Mon, 27 Sep 2010 18:09:29 +0800 Subject: KVM: MMU: audit: check whether have unsync sps after root sync After root synced, all unsync sps are synced, this patch add a check to make sure it's no unsync sps in VCPU's page table Signed-off-by: Xiao Guangrong Signed-off-by: Avi Kivity --- arch/x86/kvm/mmu.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'arch/x86/kvm/mmu.c') diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index afde64ba118d..ba7e7646fb78 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -53,14 +53,18 @@ enum { AUDIT_PRE_PAGE_FAULT, AUDIT_POST_PAGE_FAULT, AUDIT_PRE_PTE_WRITE, - AUDIT_POST_PTE_WRITE + AUDIT_POST_PTE_WRITE, + AUDIT_PRE_SYNC, + AUDIT_POST_SYNC }; char *audit_point_name[] = { "pre page fault", "post page fault", "pre pte write", - "post pte write" + "post pte write", + "pre sync", + "post sync" }; #undef MMU_DEBUG @@ -2516,6 +2520,8 @@ static void mmu_sync_roots(struct kvm_vcpu *vcpu) if (!VALID_PAGE(vcpu->arch.mmu.root_hpa)) return; + + trace_kvm_mmu_audit(vcpu, AUDIT_PRE_SYNC); if (vcpu->arch.mmu.root_level == PT64_ROOT_LEVEL) { hpa_t root = vcpu->arch.mmu.root_hpa; sp = page_header(root); @@ -2531,6 +2537,7 @@ static void mmu_sync_roots(struct kvm_vcpu *vcpu) mmu_sync_children(vcpu, sp); } } + trace_kvm_mmu_audit(vcpu, AUDIT_POST_SYNC); } void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu) -- cgit v1.2.1